Intriguing alignment of stones, “sunk into a bog” according to Coflein!
Alignment of seven standing stones; that known as Cerrig-yr-helfa has sunk into a bog.
coflein.gov.uk/en/site/303380/details/CERRIG-YR-HELFA%3B+BRYN+BRAS+STONES%2C+MYNYDD+DYFNANT/